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Unravelling the effects of crop blue, green and grey virtual water flows on regional agricultural water footprint and scarcity

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  • Cao, Xinchun
  • Bao, Yutong
  • Li, Yueyao
  • Li, Jianni
  • Wu, Mengyang

Abstract

There was presently a lack of multidimensional investigation on the impact of virtual water flow (VWF) on regional water use and scarcity. A framework for impact analysis of VWF in consideration of blue, green and grey water differentiation, taking the crop-water relationship estimation in 31 provinces of China as case study, was established in current paper. Results showed that, VWF, which mainly from northern to eastern plain and southeast, reduced agricultural water footprints by 8.3 (blue), 322.0 (green) and 52.5 (grey) G m3. National water stress index reduced from 1.20 (severe water stress) to 0.92 (high water stress), comparing crop consumption to production perspectives. VWF alleviated the resource-based water scarcity attributed to green water stress in south of the Yangtze River, and transformed the resource-based to systematic water scarcity in Xinjiang (XJ). Clarifying the influences of VWF on blue, green and grey water is the innovation of the analytical framework proposed in current paper.

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  • Cao, Xinchun & Bao, Yutong & Li, Yueyao & Li, Jianni & Wu, Mengyang, 2023. "Unravelling the effects of crop blue, green and grey virtual water flows on regional agricultural water footprint and scarcity," Agricultural Water Management, Elsevier, vol. 278(C).
    • Handle: RePEc:eee:agiwat:v:278:y:2023:i:c:s0378377423000306
    DOI: 10.1016/j.agwat.2023.108165
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    1. Bazrafshan, Ommolbanin & Ramezani Etedali, Hadi & Gerkani Nezhad Moshizi, Zahra & Shamili, Mansoureh, 2019. "Virtual water trade and water footprint accounting of Saffron production in Iran," Agricultural Water Management, Elsevier, vol. 213(C), pages 368-374.
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    Cited by:

    1. Huang, Hongrong & Zhuo, La & Wang, Wei & Wu, Pute, 2023. "Resilience assessment of blue and green water resources for staple crop production in China," Agricultural Water Management, Elsevier, vol. 288(C).
    2. Abdullah Alodah, 2023. "Towards Sustainable Water Resources Management Considering Climate Change in the Case of Saudi Arabia," Sustainability, MDPI, vol. 15(20), pages 1-29, October.
    3. Xueqing Zhao & Jin Shi & Meixia Liu & Saud Uz Zafar & Qin Liu & Ishaq A. Mian & Bushra Khan & Shadman Khan & Yan Zhuang & Wenyi Dong & Enke Liu, 2023. "Spatial Characteristics and Driving Forces of the Water Footprint of Spring Maize Production in Northern China," Agriculture, MDPI, vol. 13(9), pages 1-17, September.
    4. Bader Alhafi Alotaibi & Mirza Barjees Baig & Mohamed M. M. Najim & Ashfaq Ahmad Shah & Yosef A. Alamri, 2023. "Water Scarcity Management to Ensure Food Scarcity through Sustainable Water Resources Management in Saudi Arabia," Sustainability, MDPI, vol. 15(13), pages 1-16, July.

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